It is narrated from Sayyiduna Abu Sa'id Khudri (may Allah be pleased with him) that the Noble Prophet (peace and blessings be upon him) said: "Zakat is not obligatory on less than five wasq (of grain), nor is zakat obligatory on less than five awqiyah (of silver), nor is zakat obligatory on less than five camels." Abu Muhammad Imam Darimi (may Allah have mercy on him) said: One wasq is equal to sixty sa', and according to the people of Hijaz, one sa' is two and a half mann, and according to the people of Iraq, one sa' is four mann. (In Arabic, mann was the name of a measure, which was approximately two and a half kilograms.) Thus, the nisab for grain is three hundred sa', and in the present calculation, one sa' is about two kilograms and some grams, approximately a little more than two kilograms.